<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			body {
				margin: 22px;
			}
			
			.box {
				background-color: red;
				padding: 20px;
				border: solid 1px red;
			}
		</style>
	</head>

	<body>

		<div class="box">
			<h1>
				大家好
			</h1>
		</div>

	</body>

</html>